Almost no one voted like this, since the vast majority of people who were old enough to vote in 1940 would have been dead by 2016.
If I had to describe someone, I'd say a 97 year old walking corpse from Vermont who's been senile for the past 15 years and accidentally checked the box for Hillary before dropping dead in the voting booth.
Well, describe a voter demographic like this; not necessarily an individual voter.
Possibly ancestral Republicans in wealthy New England towns?
Orange County, California is not New England. What Voter Demographic defection in Orange County, California caused the County to vote like this?
It didn't. Orange County demographics in 2016 are nothing like they were in 1940.